Automatic engine cut-out for tractors



Dec. 21 1926.

J. A. MINNINGER AUTOMATIC ENGINE CUT-OUT FOR TRACTORS Filed April 18,i924- jfi'flrzzryflf Patented Dec. 21, 1 926.

UNITED STATES JOHN A. MINNINGER. F MADISON STATION, MISSISSIPPIAUTOMATIC ENGINE CUT-OUT FOR TRACTORS.

Application filed April 18, 1924.

This invention relates generally to tractors, and has more particularreference to an automatic engine ignition cuff out for tractor engines,the primary object 01' the inrention residing; in the provision of sucha levicc, wherein the engine ignition will be cut oil in the event thatthe tractor rears up upon its traction wheels for thereby cutting oilthe power, and allowing the tractor to right itself, which wouldotherwise result in the complete turning over of the tractor.

in additional object of the invention is to provide an ignition cut outof the above character, wherein the same may be set to operate at anypredetermined angle of the tractor to suit different demands.

A. still further object of the invention is to provide automaticignition cut out means that is relatively simple of construction andinexpensive of manufacture, and one that may be readily applied to allforms oi. C0111- bustion engine tractors now upon the mar-- lret.

lVith the "foregoing and other objects in view as the nature of theinvention will be better understood, the same comprises the novel form,combination and arrangement of parts hereinafter more fully described,shown in the accompanying drawing and claimed" In the drawings whereinlike reference characters indicate corresponding parts throughout theseveral views.

Figure 1 is a fragmentary side elevational view of a conventional formof tractor equipped with an automatic engine cut out for tractors.

' Figure 2 a detail longitudinal sectional riew through the cut outmechanism per se, and

Figure 3 a transverse section thereof.

New, having: particular reference to the drawing. 5 designates generallythe tractor that includes among other elements an in ternal combustionengine 6. with which is :esociated a well known term of ignition meansthat includes a coil box 7. within which are arranged coils. said coilshaving" electrical connection as attl with the usual magneto post l) ofthe ignition system.

Ill invention per se, constitutes the provision of a relativelyelongated metallic barrel it). that is open at one end. and screwthreaded as indicated by the reference character 11. This barrel is of asuitable length. and the same is formed upon its bot- Serial No.707,499.

tom side and intermediate its ends with a plate or car 12, that isformed at its marginal edge with an arcuate shaped slot 13. This plateor ear 1.2 is pivotally secured as at 11 to a metallic bracket 15 thatis secured in any desirable manner, and at any prede' termined point tothe tractor 5; and this preferably at a point adjacent said magneto post9. The bracket 15 carries a screw threaded belt that extends through theareaate slot 13 of the plate or ear 12 for reception of a wing; nut 16,and it will be obvious that the barrel 10 may be disposed at anydesirable angle with respect to the longitudinal axis of the tractorframe, and maintained in position by the bolt and nut above set forth.

irdapted to be threadedlv disposed upon the open threaded end of thebarrel 10 is a 'ap 17, the main wall of which is "formed with a cupportion 18, centrally through which extends an opening shown in Figure2. Disposed within this opening and insulating from the edge thereof ina suitable manner is a metallic post 19., to which is se cured one endoil. a circuit wire 20, the other end of this wire adapted forattachment to the magneto post 8. The post 19 extends within the barrel,and has associated there with a metallic cup 21, that is formed at itsinner edge with spaced longitudinally ex tending spring strips 22,preferably three in number. The extreme forward ends of these strips arecurved outwardly, and terminate closely adjacent the interior of thebarrel 10.

Adapted for free rolling movement within this barrel 10 is a heavy ball23. The position of the barrel. 10 with respect to the tree tor ispreferably as shown in the drawing it being of course understood thatthe inclination of this barrel may be changed to meet different demandswhenever the same becomes necessary. In the event that the tractor rearsupwardly upon its traction wheel. the angle of the barrel will obviouslybe changed with respect to the ground. and preferably reverse itsposition with respect to the ground, whereby the ball will movereaiwvardly within the barrel. and engage between the spring fingers 22for manifestly spreading the same apart, which spreading: will force thecurved ends into engagement with the barrel for grounding the circuitfrom the post 9 through the frame, this will obviously cut out theignition to the motor.

whereby the same will stop and the power of the rear wheels will benegatived, the tractor will then of course right itself.

The specific operation, together with numerous advantages of anautomatic engine ignition cut out for tractors of this character will beat once appreciated by those,

systems of tractor engine: orthe like including a barrel having one endclosed, a cap threaded on the other end, insulation extending throughthe cap, a post extendin t-hru the insulation into the barrel acu'p-lilie element pierced by the bar and supported within the barreladjacent the cap, spring fingers extending from the element into thebarrel and terminating beyond the inner extremity of the bar inoutwardly curved portions which are spaced from the interior surface ofthe barrel, and a ball movable in the barrel to engage the springfingers and to spread them into engagement with the barrel.

In testimony whereof I aflix my signature.

JOHN A, MINNINGER a plurality of 25

